<template>
  <div class="msite">
    <!--首页头部-->
    <header-top :title="address.name">
      <router-link to="/search" class="header_search" slot="left">
        <i class="iconfont icon-sousuo"></i>
      </router-link>
      <router-link
          :to="userInfo._id ? '/userInfo' : '/login'"
          class="header_login" slot="right"
      >
        <span class="header_login_text" >
          <i class="iconfont icon-person" v-if="userInfo._id"></i>
          <span v-else>登录|注册</span>
        </span>
      </router-link>
    </header-top>
    <!--首页导航-->
    <nav class="msite_nav border-1px">
      <div class="swiper-container" v-if="categorys.length">
        <div class="swiper-wrapper">
          <div class="swiper-slide" v-for="(categorys,index) in categorysArr" :key="index">
            <a href="javascript:" class="link_to_food" v-for="(item,index) in categorys" :key="index">
              <div class="food_container">
                <img :src="imgBaseUrl + item.image_url">
              </div>
              <span>{{item.title}}</span>
            </a>
          </div>

        </div>
        <!-- Add Pagination -->
        <div class="swiper-pagination"></div>
      </div>
      <img src="./images/msite_back.svg" alt="back" v-else>
    </nav>
    <!--首页附近商家-->
    <shop-list></shop-list>
  </div>
</template>

<script>
  import HeaderTop from 'components/HeaderTop/HeaderTop'
  import ShopList from 'components/ShopList/ShopList'
  import {mapState} from 'vuex'
  import Swiper from 'swiper'
  import 'swiper/dist/css/swiper.min.css'

  export default {
    data () {
      return {
        imgBaseUrl: 'https://fuss10.elemecdn.com'
      }
    },
    components:{
      HeaderTop,
      ShopList
    },
    mounted() {
      this.$store.dispatch('getCategorys');
      this.$store.dispatch('getShops');
    },
    computed: {
      ...mapState(['address','categorys','userInfo']),

      categorysArr () {
        const max = 8;
        const arr = [];
        let smallArr = [];
        this.categorys.forEach((c, index) => {
          if(smallArr.length===0) {
            arr.push(smallArr)
          }
          smallArr.push(c);
          if(smallArr.length===max) {
            smallArr = []
          }
        });
        return arr
      }
    },
    watch: {
      categorys() {
        this.$nextTick(()=>{
          //轮播图配置
          let mySwiper = new Swiper('.swiper-container', {
            direction: 'horizontal',
            loop: true,
            // 如果需要分页器
            pagination: {
              el: '.swiper-pagination',
            }
          })
          //轮播图配置end
        })
      }
    }
  }
</script>

<style lang="stylus" scoped>
  @import "../../common/stylus/mixins.styl"
  .msite
    width 100%
    .header
      background-color #02a774
      position fixed
      z-index 100
      left 0
      top 0
      width 100%
      height 45px
      .header_search
        position absolute
        left 15px
        top 50%
        transform translateY(-50%)
        width 10%
        height 50%
        .icon-sousuo
          font-size 25px
          color #fff
      .header_title
        position absolute
        top 50%
        left 50%
        transform translate(-50%, -50%)
        width 50%
        color #fff
        text-align center
        .header_title_text
          font-size 20px
          color #fff
          display block
      .header_login
        font-size 14px
        color #fff
        position absolute
        right 15px
        top 50%
        transform translateY(-50%)
        .header_login_text
          color #fff
    .msite_nav
      bottom-border-1px(#e4e4e4)
      margin-top 45px
      height 180px
      background #fff
      .swiper-container
        width 100%
        height 100%
        .swiper-wrapper
          width 100%
          height 100%
          .swiper-slide
            display flex
            justify-content center
            align-items flex-start
            flex-wrap wrap
            .link_to_food
              width 25%
              .food_container
                display block
                width 100%
                text-align center
                padding 5px 0
                font-size 0
                img
                  display inline-block
                  width 50px
                  height 50px
              span
                display block
                width 100%
                text-align center
                font-size 12px
                color #666
        .swiper-pagination
          bottom 5px
          >span.swiper-pagination-bullet-active
              background #02a774

</style>